Snow board

ABSTRACT

A ski construction such as a ski, monoski, or snow board includes a principal base support ( 2 ) which has a sliding sole ( 6 ) that is raised to form a tip ( 8 ) at its front end. An upper surface of the ski defines a housing or pocket ( 20 ) with a central contracted region defined by lateral projections ( 18   a,    18   b ). One of a family of elongated complementary elements ( 3 ) with hollow profiles ( 12   a,    12   b ) is frictionally received in the pocket. The complementary elements can have different lengths, thicknesses, stiffness, constructions, or material properties. By selecting among the family of complementary elements, a common principal support base can be configured to have a variety of skiing characteristics which complement the skiing abilities of a variety of skiers, skiing conditions, and the like.

[0001] The present invention relates to a snow board, such as a ski or asnow plank, a surf-board or other. It concerns more particularly animprovement relative to a sliding board comprising a support base and acomplementary element intended for receiving the retention binding ofthe user's boot.

[0002] Over the past few years, the practice of sliding as a sportsactivity has become more and more adapted and developed with thepractitioners of said sport making ever increasing demands with respectto product quality. This is the case, for example, with respect to thesport of sliding on snow.

[0003] Numerous models of snow sliding boards are already known, andspecifically ski models which comprise a beam of elongated shape, whosefront extremity is raised to form the spatula, while the lower surfacecomprises a sliding sole bordered by metal squares.

[0004] In spite of efforts developed by the equipment builders tosatisfy their clientele, to this day, there does not exist a ski whichfully combines user comfort and satisfactory performance on the skislopes, regarding of type of terrain, and regardless of type of user.Certain tentative endeavors have been made, such as for example theconstructions disclosed in French Patents 2 670 392 and 2 675 391.However in order to satisfy the diversity imposed by the market, eachequipment builder proposes a sizeable number of models, each of whichpresents its own characteristics. This requires the manufacturer tohandle a significant number of models, which reduces production seriesand adds significantly to the fabrication costs. Applicant, with its skidisclosed by French Patent No. 2 726 193 has already proposed a skiconstruction according to which a body is provided on which a foot plateis fixed, and different foot plates can correspond to one body. However,in spite of enormous progress afforded by said constructions, thereexists the realization that improvements are still possible.

[0005] The present invention proposes multi-use skis, formed by asupport base and a complementary element, the combined shapes of whichgive the whole ski its required characteristics, as well as comfort inhandling the ski. In addition, the structure of the ski according to theinvention permits limiting the number of sizes for the same model.

[0006] Thus, the sliding board according to the invention is of the typewhich comprises a principal part, which is called body or support base,on the upper surface of which is fixed, at least in the zone of thesole-plate, a complementary longitudinal element intended to receive theretention binding or bindings of the boot of the user, said support basehaving the shape of an elongated beam comprising a sliding sole, whosefront extremity is raised in order to form a spatula, and ischaracterized in that the complementary longitudinal element is in theshape of an elongated plate, whose width, measured between its lateraledges is smaller that the width of the support base and at least one ofits lateral edges comprises a hollow profile, in a manner so that thecomplementary element would include a front part connected to a rearpart by a smaller size zone and in that the lateral retention of thecomplementary element is realized, at least in part, by embedment of thecomplementary element within a housing realized in the support base,which comprises at least one lateral retention edge comprising aninternal lateral projection intended to cooperate with the hollowprofile of the complementary element.

[0007] According to an additional characteristic, the length of thecomplementary element ranges between 30% and 60% of the length of thesupport base.

[0008] According to another characteristic, the housing realized in thesupport base is a built-in housing, limited laterally by two lateralretention edges, projecting laterally relative to the surface of thebottom of the housing and whose central zone includes for each of theedges an internal lateral projection extenting towards the median plane.

[0009] In a preferred embodiment of the invention, the smaller size zoneof the complementary element is approximately located in the centralzone of the complementary element and each of the lateral edgescomprises a hollow profile; thus, the left lateral edge comprises a lefthollow profile, while the right lateral edge comprises a right hollowprofile.

[0010] It should be added, according to said preferred embodiment, thatthe hollow profiles have a round profile, while the correspondingprojections have a complementary round shape so that each of theprojections form one retention projection, making sure of lateral andlongitudinal retention of the complementary element relative to thesupport base.

[0011] According to a variation in the embodiment, the complementaryelement is formed by two adjacent individual and independentcomplementary elements, each of the individual elements comprising itsown hollow profile on its external lateral edge, which is supportedlaterally on the corresponding edge of the support base, while theinternal lateral projections of the edge cooperate with thecorresponding hollow profile.

[0012] It should be noted that a set of several different complementaryelements can correspond to a given support base, said elements caneither be of different lengths, different thickness, or have differentmechanical characteristics intended to confer to the ski formed by thesupport base and its complementary element, different performancecharacteristics.

[0013] It should also be added that several complementary elements ofdifferent lengths and different shapes can correspond to a given supportbase, notably at the level of their front and rear extremities.

[0014] According to a variation of the embodiment, several complementaryelements correspond to a given support base, with at least one of saidcomplementary elements including at least one disengagement from theextremity in the front and/or in the rear and in that the housing andnotably its bottom surface is designed to cooperate with one or theother of the complementary elements, whose front and/or rear extremitycomprise at least one zone in stepped-up form in such manner so as tocorrespond to the disengagement of the extremity or extremities of thecomplementary element.

[0015] According to a variation in the embodiment, the complementaryelement is formed by two adjacent individual complementary elements,while it may be provided that these latter may be separated by alongitudinal space, which includes an intermediate element havingshock-absorbing properties. Said element is, for example, of elasticallydeformable material such as of caoutchouc, of rubbery elastomer, ofvisco-elastic caoutchouc or of any equivalent material.

[0016] According to other variations, an intermediate element isprovided which possesses shock-absorbing properties, and which islocated between the complementary element and the lateral retention edgeor edges.

[0017] Other characteristics and benefits of the invention are apparentfrom the description below in comparison with the attached drawing,which are provided by way of example only, and are not limited to same.

[0018] FIGS. 1 to 9 represent a first design mode of the invention.

[0019]FIG. 1 is a lateral view of the ski whose complementary element isnot positioned on the support base.

[0020]FIG. 2 is a lateral view of the ski with the complementary elementbeing put in place on the support base.

[0021]FIG. 3 is a bird's eye view of the complementary element only.

[0022]FIG. 4 is a bird's eye view of the support base only, without thecomplementary element.

[0023]FIG. 5 is a bird's eye view of the ski whose support base isequipped with its complementary element.

[0024]FIGS. 6a, 6 b, 6 c, 6 e are sectional views of the support baseonly, according to A-A, B-B, C-C, D-D, E-E, in larger scale.

[0025]FIGS. 7a, 7 b, 7 c, 7 d, 7 e are sectional views according to A-A,B-B, C-C, D-D, E-E, in larger scale of the ski, i.e. of the support baseequipped with its complementary element.

[0026]FIG. 8 is a perspective view of the ski, prior to placement of thecomplementary element on the support base.

[0027]FIG. 9 is a perspective view of the ski with the support basebeing equipped with its complementary element.

[0028]FIGS. 10, 11 and 12 illustrate variations of embodiment in partialviews from above.

[0029]FIGS. 13, 14 and 15 are lateral views similar to FIG. 1,indicating improvements of the invention.

[0030]FIG. 16 is a partial lateral view in longitudinal section,indicating an embodiment variation relative to the connection betweenthe support base and the complementary element.

[0031]FIGS. 17 and 18 depict lateral views of two design variations ofthe complementary element.

[0032]FIG. 19 illustrates a support base with three possiblecomplementary elements.

[0033]FIGS. 19a, 19 b, 19 c indicate in bird's eye view, three differentskis, formed by an identical support base but equipped with either oneof the complementary elements of the preceding Figure.

[0034]FIGS. 20 and 21 are bird's eye views, depicting two otherembodiment variations.

[0035]FIG. 22 depicts a design variation of the ski of FIG. 21.

[0036]FIGS. 23a, 23 b, 23 c, 23 d, 23 e and 24 a, 24 b, 24 c, 24 d, 24 eare view similar to FIGS. 7a, 7 b(!), 7 c, 7 d, 7 e, depicting twoembodiment variations.

[0037]FIGS. 25 and 26 are bird's eye views of two other embodimentvariations.

[0038] The ski bearing general reference (1) is a group of elongatedshapes having a median longitudinal vertical plane (P) of generalsymmetry whose front is raised in order to form the spatula (8).

[0039] The ski (1) is formed by a principal part which we are going tocall body or support base (2) on the upper surface of which is fixed, atleast in the zone of the foot-plate (4), a complementary element (3)intended to receive the retention binding of the boot of the user.

[0040] The support base (2) is the element which is in contact with thesnow and having the shape of an elongated beam, presenting on its lowersurface a sliding sole (6) bordered laterally by lateral squares (7 a, 7b) made of metal.

[0041] The support base (2) is an elongated beam whose front extremityis raised in order to form the spatula (8) of the ski. Said support base(2) has its own thickness, slope line, width and stiffness distributionand can be of any type and any form.

[0042] Consequently, the elongated beam forming the support base (2) canbe of any design type known to date, such as for example, sandwich type,box type, mixed mode and formed by a group of elements and componentsknown on their own.

[0043] The complementary element (3) in the form of an elongated plate,comprising two lateral edges (9 a, 9 b) extend between a front extremity(10) and a rear extremity (11).

[0044] The width (T1) of the complementary element (3), i.e. the width(T1) measured between its lateral edges (9 a, 9 b) is smaller than thewidth (T2) of the support base (2) at the location of measurement.According to a characteristic of the invention, the complementaryelement (3) is [designed] so that at least one of its lateral edges (9 aand/or 9 b) comprises a hollow profile (12 a and/or 12 b), in suchfashion that said complementary element (3) includes a front portion(13) connected to a rear portion (14) by means of a smaller size (15)zone. It should be noted that the length (L1) of the complementaryelement (3) is smaller than the length (L2) of the support base (2). Byway of example, one notes that the length (L1) of the complementaryelement (3) can comprise between 30% and 60% of the length (L2) of thesupport base (2). Consequently, the length (L1) of the complementaryelement can, for example, have a length ranging between 50 and 100centimeters.

[0045] According to the preferred embodiment of the invention, thesmaller sized zone (15) is located approximately in the central zone(16) of the complementary element (3) and each of the lateral edges (9a, 9 b) comprises a hollow profile (12 a, 12 b). Thus, the left lateraledge (9 a) comprises a left hollow profile (12 a), whereas the rightlateral edge (9 b) comprises a right hollow profile (12 b).

[0046] As is the case with respect to the support base (2), thecomplementary element (3) has its own configuration and structure. Ithas its own distribution in regard to thickness, size and stiffness andcan be of any construction type. Consequently, said complementaryelement (3) can be a single block element realized out of one singlematerial. However, it can also be designed in any other fashion, such asfor example, so that the front portion (13) is of a different materialand/or conception than the rear portion (14).

[0047] The support base (2) is such that the upper surface comprises ahousing (17) realized in the support base intended to assure retention,specifically lateral retention, of the complementary element (3) in saidsupport base (2).

[0048] According to a characteristic of the invention, the lateralretention of the complementary element (3) is realized by at least onelateral internal projection (18 a, 18 b) protruding towards the medianplane (P) and intended to cooperate with the corresponding hollowprofile (12 a, 12 b) of the complementary element (3).

[0049] In the preferred design mode of the invention, the housing (17)realized in the support base (2) is an embedded housing, limited inlateral direction by two lateral edges for lateral retention (19 a, 19b) protruding relative to the bottom surface of the housing (20) andwhose central zone comprises for each of the edges an internal lateralprojection (18 a, 18 b).

[0050] Thus, the support base (2) comprises a right edge (19 b)comprising a right projection (18 b) and a left edge (19 a) comprising aleft projection (18 a).

[0051] It is understood that according to the preferred mode of theinvention, the right projection (18 b) is prolonged toward the front bya right front edge (19″b) and toward the rear by a right rear edge(19″b), while the left projection (18 a) is prolonged toward the frontby a left edge (19′a) and toward the rear by a left rear edge (19″a).

[0052] Precisely, according to the preferred mode, the hollow profiles(12 a, 12 b) have a round profile, while the corresponding projections(18 a, 18 b) have a complementary round shape. Thus, each of theprojections forms a retention projection assuring lateral andlongitudinal retention of the complementary element (3) in relation tothe support base (2).

[0053] It is understood, of course, that the hollow profile or profiles(12 a, 12 b) as well as the projecting profile or profiles (18 a. 18 b)can have other shapes as is illustrated in FIGS. 10 and 11,—namelytriangular, rectangular, even square.

[0054] In addition, the left retention projection (18 a) with its leftfront edge (19′a) and its left rear edge (19″a) is symmetrical relativeto plane (P) of the right projection (18′b) with its right front edge(19′b), its right rear edge (19″b). The arrangement, however, may alsobe different, such as for example as represented in FIG. 12, where thetwo lateral projections (18 a, 18 b) are displaced longitudinally, i.e.that one of the projections, for example, is situated more to the rearthan the other of the projections.

[0055] According to a complementary characteristic, a set of severalcomplementary elements (3 a, 3 b, 3 c-3′a, 3′b, 3′c-3″a, 3″b, 3″c-3′″a,3′″b, 3′″c) correspond to one support base (2).

[0056] Consequently, several complementary elements of different lengthscan correspond to a given support base (2) and, for example, threecomplementary elements (3′a, 3′b, 3′c) with different lengths (L1, L2,L3) as is illustrated in FIG. 13. Likewise, to one given support base(2) can correspond several complementary elements (3″a, 3″b, 3″c) withdifferent thickness (e1, e2, e3) as is illustrated in FIG. 14. It shouldalso be noted that several complementary elements (3′″a, 3′″b, 3′″c)with different mechanical characteristics can correspond to a givensupport base (2), as is illustrated in FIG. 15, intended to confer tothe ski (1) formed by the support base (2) and its complementary element(3) different performance characteristics. The different characteristicscan be obtained by different thickness of the complementary elements orby means of a different structure, by different materials, even bydifferent geometry.

[0057] Fixation of the complementary element (3) on the support base (2)takes place, of course, by embedment in the corresponding housing (17),but also by connection of its lower surface (21) with the bottom surface(20) of housing (17), said connection might be realized, for example, bymeans of glue, or welding. Said connection can be done on the entiresurface of the complementary element (3) or only on a portion of thesurface, such as for example, in the zones of the front portion (13) andthe rear portion (14).

[0058] Needless to say, it can also be provided that the connection ofthe complementary element (3) on the support base (2) is realizedmechanically, such as, for example, by embedding the projection (22) inthe corresponding holes (23), as illustrated in FIG. 16.

[0059] One notes that the thickness (2) of the complementary element (3)can be constant, as shown in FIGS. 1 to 16, or varied, as illustrated inFIG. 17, in order to be, for example, thicker in the center of thesmaller size zone (15) or thinner in the zone of lesser thickness. It isunderstood, of course, that the thickness of the complementary elementcould be such that the front would be thicker than the rear, orconversely, in such manner that the upper surface (24) of thecomplementary element (3) is inclined relative to the surface of thesole (6) as is illustrated in FIGS. 23a, 23 b, 23 c, 23 d, 23 e and 24a, 24 b, 24 c, 24 d, 24 e. According to the variation illustrated inFIGS. 23a, 23 b, 23 c, 23 d, 23 e, the thickness of the complementaryelement (3) progressively diminishes toward the rear, whereas, accordingto the variation illustrated in FIGS. 24a, 24 b, 24 c, 24 d, 24 e, thethickness of the complementary element (3) progressively diminishestoward the front. Thus, embedment of the complementary element (3) inthe housing (17) can be either total or partial, that is to say that theupper surface (24) of the complementary element can, at least in certainlocations, go beyond the lateral edges.

[0060] In addition, the lower surface (21) of the complementary element(3) can be level, as is illustrated in FIGS. 1 to 17, or rounded, forexample, concave, as illustrated in FIG. 18, and, in such case, thesurface of the bottom (20) of housing (17) has the correspondingcurvature.

[0061] One has already noted previously that a set of severalcomplementary elements can correspond to a given support base.

[0062] According to the preferred mode of the invention illustrated inFIGS. 19, 19a, 19 b, 19 c, to support base (2) correspond severalcomplementary elements (3 a, 3 b, 3 c) having different lengths ordifferent shapes, notably at the level of their front and rearextremities. Consequently, the first complementary element (3 a) that isto say the one shortest in length (11) is a plate whose lower surface(21) is flat in order to cooperate with the central portion (20 a) ofthe bottom (20) of the embedment housing (17) whereas the secondcomplementary element (3 b) of intermediate length (L2) comprises anextremity disengagement at the front (24 a) and at the rear (24 b),while the extremity of the third complementary element (3 c) with thegreatest length (L3) comprises a first front extremity disengagement (24a) and a second front extremity disengagement (25 a) and a first rearextremity disengagement (24 b) and a second rear disengagement (25 b).It should be added that the housing (17) and specifically its bottomsurface (20) is configured for cooperation with any one of thecomplementary elements (3 a, 3 b, 3 c). Thus, the front extremity (17 a)and the rear extremity (17 b) comprise a zone in the shape of steps, insuch manner so as to correspond to the disengagements of the extremitiesof the complementary element (3). The front extremity (17 a) of housing(17) as well as the rear extremity (17 b) of this housing are configuredrelative to shape and dimensions to receive and cooperate with thedifferent complementary elements (3 a, 3 b, 3 c). It is clear thatthanks to three different complementary elements (3 a, 3 b, 3 c) on thebase of a single support (2) it is possible to realize three differentskis, the first one (1 a) represented by the support base (2) and thefirst complementary element (3 a), the second one (1 b) represented bythe support base (2) and the second complementary element (3 b) and thethird one (1 c) represented by the support base (2) and the thirdcomplementary element (3 c)—these three different skis beingrespectively represented in FIGS. 19a, 19 b, 19 c.

[0063]FIGS. 20 and 21 representing two other design variations,according to which the complementary element (3) is formed by twoadjacent individual complementary elements (3A, 3B). It should be notedthat each of these individual elements includes its own hollow profile(12 a, 12 b) on its external lateral edge which is supported laterallyon the corresponding edge (19 a, 19 b) of the support base (2) while theinternal lateral projection of the edge cooperates with thecorresponding hollow profile.

[0064] According to the variation illustrated in FIG. 20, the twoindividual complementary elements (3A, 3B) are separated by alongitudinal space (30)

[0065] According to the design variation of FIG. 21, the longitudinalspace comprises an intermediate element (31) which can, for example, bea shock-absorbing element realized of elastically deformable material.

[0066]FIG. 22 depicts a design variation of the ski of FIG. 21,according to which the intermediate shock-absorbing element (31) extendstoward the front and toward the rear beyond the extremities of theindividual complementary elements (3A, 3B) in order to form enlargedfront (310) and rear (311) end zones, being placed in the front (17 a)and rear (17 b) extremities of housing (17).

[0067]FIGS. 25 and 26 are bird's eye views of two other embodimentvariations. According to these two variations, the intermediate elementpossesses shock-absorbing properties and is arranged between thecomplementary element (3) and the lateral retention edges (19 a, 19 b).

[0068] According to the design mode illustrated in FIG. 25, a leftlateral element (311 a) having shock-absorbing properties has beenarranged between the two lateral retention edges (19 a, 19 b) and aright lateral element (311 b) with shock-absorbing properties extendingover the full length of the complementary element (3). It is understood,of course, that one does not go outside the scope of the invention ifthe lateral shock-absorbing element were provided on only one side orwould not extend over the entire length of the complementary element (3)but only over a portion of its length. It is clear that the lateralelement with shock-absorbing properties (311 a, 311 b) in this designmode was arranged “sandwich-like” between the lateral border or borders(9 a, 9 b) of the complementary element (3) and the lateral retentionedge or edges (19 a, 19 b).

[0069] Thus, according to the design mode represented in FIG. 26, thelateral element having shock-absorbing properties (311′a, 311′b) extendsonly up to the level of the lateral internal projection (18 a, 18 b). Insaid variation, one does not go outside the frame-work of the inventionif the lateral element having shock-absorbing properties were providedon only one side. It is clear that the lateral element havingshock-absorbing properties (311′a, 311′) was arranged in ‘sandwich-like’fashion in this mode of embodiment between the internal lateralprojection or projections (18 a, 18 b) of the support base (2) and thehollow profile or profiles (12 a, 12 b) of the complementary element(3).

[0070] The lateral element or elements having shock-absorbing properties(311 a, 311 b-311′a, 311′b) of design modes according to FIGS. 25 and26, is/are made of elastically deformable material, such as, forexample, a visco-elastic material, and, for example of caoutchouc, ofrubber-elastomer, or visco-elastic caoutchouc, or of any otherequivalent material.

[0071] It should be added that the external flanks of the lateral edges(19 a, 19 b) are of beneficial round shape.

[0072] It is understood, of course, that the invention is not limited tothe embodiment modes described and represented by way of example, butincludes also all equivalent techniques as well as combinations of same.

1. Snow-board (1) such as a ski, a single ski-board or a surf-board,with vertical plane of general symmetry (P), comprising a principalportion, called body or support base (2) on the upper surface of whichis fixed at least in the zone of the foot-piece (4) a complementarylongitudinal element (3) intended to receive the retention binding orretention bindings of the boot of the user, said support base (2) havingthe shape of an elongated beam, comprising a sliding sole (6), whosefront extremity is raised to form a spatula (8), characterized in thatthe complementary longitudinal element (3) has the shape of an elongatedplate whose width (T1) measured between its lateral borders (9 a, 9 b)is smaller than the width (T2) of the support base (2) and at least oneof its lateral borders (9 a and/or 9 b) corn pises a hollow profile (12,12 b) in such manner that the complementary element (3) includes a frontportion (13) connected to a rear portion (14) by a zone (15) of smallerwidth and in that the lateral retention of the complementary element (3)is realized, at least partially, by embedment of the complementaryelement (3) in a housing (17) realized in the support base (2) whichincludes at least one lateral retention edge (19 a, 19 b), comprising aninternal lateral projection (18 a, 18 b) intended to cooperate with thehollow profile (19 a, 19 b) of the complementary element (3). 2.Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to claim 1, characterized in that the length (L1) rangesbetween 30% and 60% of the length (L2) of the support base (2). 3.Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to either claim 1 or claim 2, characterized in that housing(17) realized in the support base (2) is an embedment housing, limitedlaterally by two edges for lateral retention (19 a, 19 b) projectingrelative to the surface of the bottom of housing (20) and whose centralzone comprises for each of the edges an internal lateral projection (18a, 18 b) protruding and extending toward the median plane (P). 4.Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to any one of the preceding claims, characterized in that thezone of lesser size (15) of the complementary element is approximatelylocated in the central zone (16) of the complementary element (3) andeach of the lateral borders (9 a. 9 b) includes a hollow profile (12 a,12 b); thus, the left lateral border (9 a) includes a left hollowprofile (12 a), while the right lateral border (9 b) includes a righthollow profile (12 b).
 5. Snow-board (1) such as a ski, a singleski-board or a surf-board according to claim 4, characterized in thatthe hollow profiles (12 a, 12 b) have a rounded profile, while thecorresponding projections (18 a, 18 b) have a complementary round shape,so that each of the projections represents a retention projectionassuring lateral and longitudinal retention of the complementary element(3) relative to the support base (2).
 6. Snow-board (1) such as a ski, asingle ski-board or a surf-board according to any one of the precedingclaims, characterized in that the complementary element (3) is formed bytwo individual and independent adjacent complementary elements (3A, 3B),each of the individual elements comprising its own hollow profile (12 a,12 b) on its external lateral border which is laterally supported on thecorresponding edge (19 a, 19 b) of the support base (2) while theinternal lateral projection of the edge cooperates with thecorresponding hollow profile.
 7. Snow-board (1) such as a ski, a singleski-board or a surf-board according to claim 6, characterized in thatthe two individual complementary elements (3A, 3B) are separated by alongitudinal space (30).
 8. Snow-board (1) such as a ski, a singleski-board or a surf-board according to claim 7, characterized in thatthe longitudinal space comprises an intermediate shock-absorbing element(31), realized of elastically deformable material.
 9. Snow-board (1)such as a ski, a single ski-board or a surf-board according to any oneof the preceding Claims, characterized in that a set of severaldifferent complementary elements (3 a, 3 b, 3 c-3′a, 3′b, 3′c-3″a, 3″b,3″c-3′″a, 3′″b, 3′″c) corresponds to a given suppport base (2). 10.Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to claim 8, characterized in that several complementaryelements (3′a, 3′b, 3′c) of different lengths (L1, L2, L3) correspond toa given support base (2).
 11. Snow-board (1) such as a ski, a singleski-board or a surf-board according to claim 8 or 9, characterized inthat several complementary elements (3″a, 3″b, 3″c) of differentthickness (e1, e2, e3) correspond to a given support base (2). 12.Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to claim 8, 9 or 10, characterized in that severalcomplementary elements (3′″a, 3′″b, 3′″c) of different mechanicalcharacteristics correspond to a given support base (2), saidcomplementary elements intended to confer to the ski (1) represented bythe support base (2) and its complementary element (3) differentperformance characteristics.
 13. Snow-board (1) such as a ski, a singleski-board or a surf-board according to any one of the preceding claims,characterized in that several complementary elements (3 a, 3 b, 3 c)having different lengths and different shapes, specifically at the levelof the front and rear extremities, correspond to a given support base(2).
 14. Snow-board (1) such as a ski, a single ski-board or asurf-board according to the preceding claim, characterized in that to agiven support base (2) correspond several complementary elements (3 a, 3b, 3 c) of which at least one includes at least one extremitydisengagement in front (24 a) and/or in the rear (24 b) and in that thehousing (17) and specifically its bottom surface (20) is configured tocooperate with any one of the complementary elements (3 a, 3 b, 3 c),whose front extremity (17 a) and/or rear extremity (17 b) comprises atleast one “stepped-up” zone, in such fashion so as to correspond to thedisengagement of the extremity or the extremities of the complementaryelement (3).
 15. Snow-board (1) such as a ski, a single ski-board or asurf-board according to the preceding claim, characterized in that to agiven support base (2) correspond several complementary elements (3 a, 3b, 3 c), with the first complementary element (3 a), i.e. the oneshortest in length (L1) being a plate whose lower surface (21) is levelto cooperate with the central portion (20 a) of the bottom (20) of theembedment housing (17) while the second complementary element (3 b) ofintermediate length (L2) comprises a disengagement of the extremity inthe front (24 a) and in the rear (24 b) with the third extremity of thecomplementary element (3 c) having the greatest length (L3) including afirst disengagement of the extremity in the front (24 a) and a seconddisengagement of the front extremity (25 a) and a first disengagement ofthe rear extremity (24 b) and a second rear disengagement (25 b), and inthat the housing (17) and specifically its bottom surface (20) isconfigured to cooperate with any of the complementary elements (3 a, 3b, 3 c), the front extremity (17 a) and the rear extremity (17 b)comprising a “stepped-up” shaped zone in such manner so at to correspondto the disengagements of the extremities of the complementary element(3).
 16. Snow-board (1) such as a ski, a single ski-board or asurf-board according to any one of the preceding claims, characterizedin that the thickness of the complementary element could be such thatthe front would be thicker than the rear or conversely, of the type thatthe upper surface (24) of the complementary element (3) would beinclined relative to the surface of the sole (6).
 17. Snow-board (1)such as a ski, a single ski-board or a surf-board according to any oneof the preceding claims, characterized in that the complementary element(3) is formed by two individual adjacent complementary elements (3A,3B).
 18. Snow-board (1) such as a ski, a single ski-board or asurf-board according to claim 17, characterized in that the twocomplementary individual adjacent elements (3A, 3B) are separated by alongitudinal space (30), which includes an intermediate element made ofelastically deformable material having shock-absorbing properties (31).19. Snow-board (1) such as a ski, a single ski-board or a surf-boardaccording to any one of the preceding claims, characterized in that anintermediate element with shock-absorbing properties (311 a, 311b-311′a, 311′b) is provided, arranged between the complementary element(3) and the lateral retention edge or edges (19 a. 19 b).